Journal of Energy Storage
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2025
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IF 9.8
Rongjun Wu,Lisheng Deng,Linfa Xiao,Pei Lu,Shusen Lin,Noriyuki Kobayashi,Mitsuhiro Kubota,Chao Wang,Hongyu Huang,Xianglong Luo
Mg(OH) 2 /MgO-based thermochemical energy storage (TCES) has garnered significant interest for its potential in moderate-temperature long-term thermal energy storage, which is crucial for the stable and efficient utilization of solar energy, due to its high energy storage density, low cost, and non-toxicity. However, its practical applications are limited by agglomeration and sintering issues, which decrease the dehydration/hydration rate and reduce durability. This study focuses on designing a MgO-based composite structure by in-situ casting MgO nanoparticles within the pores of nanoporous carbon (NC). The composites were synthesized by a calcination method. Their TCES performances were tested using a thermogravimetric analysis. The NC, with an average pore size of 14.1 nm, effectively confined the growth of MgO particles within its pores, thereby producing MgO particles with small size and uniform dispersion while maintaining a high proportion of MgO in the composite. Consequently, the composite demonstrated the fastest hydration, achieving a 98.7 % conversion ratio, which was 58.9 % higher than that of pure MgO. Meanwhile, the composite exhibited a high dehydration rate and a large heat storage density of 946.5 kJ/kg. Importantly, the composite showed excellent structural stability and exhibited good durability over 60 cycles, with a slight decrease (6.0 %) in heat storage density, whereas pure MgO showed a decrease of 63.1 %. The high energy storage density and superior durability of the developed composite, compared to existing Mg(OH) 2 /MgO-based materials, make it a promising candidate for TCES applications. This study offers a reference for the rational design of TCES materials with agglomeration inhibition and reaction activity.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Yabo Guo,Zhihao Feng,Jiangyi Guo,Lu-Hua Zhang,Fengshou Yu
Electrochemical nitrate reduction reaction (NO 3 RR) is an energy efficient and environmentally friendly technology that removes nitrate compounds from wastewater while producing ammonia as a value-added product. NO 2 − is a crucial intermediate in the electrocatalytic NO 3 RR, and regulating the intermediate adsorption structure is the key to improve the reaction efficiency. However, stabilizing the reaction intermediates by optimizing the catalyst structure remains a great challenge. Herein, We demonstrate copper phthalocyanine (CuPc) anchored on a Mg(OH) 2 -decorated nitrogen-doped carbon composite as an efficient electrocatalyst for NO 3 RR, achieving ambient conditions ammonia synthesis in neutral electrolytes. The incorporation of Mg(OH) 2 induces interfacial electron transfer, creating a charge-redistributed Cu active site that facilitates the adsorption of NO 3 − and reaction intermediates. Moreover, the Mg 2+ sites with negative electrostatic potential (ESP) interact with the oxygen sites exhibiting positive ESP on the critical NO 3 RR intermediate, thereby optimizing the adsorption geometry while enhancing both the stability of the intermediate and its subsequent catalytic conversion. When used for electrochemical NO 3 − reduction reaction (NO 3 RR), the developed CuPc/Mg(OH) 2 /NC exhibits a prominent Faradaic efficiency for NH 3 formation (FE NH3 ) of 98.09 % and NH 3 yield of 12.632 mg h −1 cm −2 .
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Journal of Cleaner Production
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2020
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IF 7.246
Shanshan Shao,Xinggang Hu,Wenbin Dong,Xiaohua Li,Huiyan Zhang,Rui Xiao,Yixi Cai
Aldol condensation of biomass-derives coupled with hydrogenation is a promising route for the production of renewable aviation fuel. In this study, a bifunctional catalyst was prepared to integrate the aldol condensation of cyclopentanone and hydroprocessing for aviation fuel in one pot. Due to its strong mild-basic sites, Mg–Al–O performed the best with the total yield of dimer and trimer of 80.4%. Nickel was screened out to be favorable for hydrogenation. Considering the unsatisfactory porous structure of Ni/Mg–Al–O, the bifunctional catalyst was prepared with activated carbon (AC) as carrier. With Ni loading of 20 wt%, the maximum yield of targeted alkanes reached 81.1% over Ni/Mg–Al–O/AC. The calcination and reduction temperature in the preparation process were both optimized at 550 °C. In the reusability test, the yield of targeted alkanes reduced to 31.6% in the 5th run. To attenuate the hydration effect, n-pentane was introduced as solvent, and the bifunctional Ni/Mg–Al–O/AC performed stably in 5 runs. By the design of bifunctional catalyst based on the theoretical basis to realize the integration of C–C coupling and hydrogenation in one pot, it will promote the development of aviation fuel from biomass in a more sustainable and green way.
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CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Jing Zeng,Dongzheng Wu,Xin Wang,Junnan Wu,Jiyang Li,Jing Wang,Jinbao Zhao
The high-voltage cathode material based on the sodium super ionic conductor (NASICON) structured Na 3 V 2 (PO 4 ) 3 (NVP) has been found to be a potential candidate for Mg storage. In this work, to improve its electrochemical performance, we construct honeycomb-like structured NVP/C/G with faster electronic and ionic transport by a convenient and universal spray-drying method for the first time. After electrochemically desodiating two Na from the NVP/C/G (ED-NVP/C/G), the ED-NVP/C/G is tested in highly anhydrous Mg electrolyte, and the insights into its Mg storage property and mechanism are carefully studied. An initial capacity of 87 mAh g −1 with a relatively high average discharge voltage of 2.47 V vs. Mg 2+ /Mg is obtained at 0.1 C. The X-ray diffraction (XRD) results show that the inserted Mg 2+ ions tend to occupy the Na2 (at 18e sites) vacant sites. The investigation of kinetic process by galvanostatic intermittent titration technique (GITT) reveals that the Mg diffusion kinetics is faster during the demagnesiation process. The electrochemical reaction bases on two-phase transition mechanism, and the R ct value shows a positive relationship to the formation of NaV 2 (PO 4 ) 3 phase. Finally, a Mg full cell prototype based on the ED-NVP/C/G cathode with Mg metal anode is built. The rational structure design of NVP/C/G improves the electrochemical performance for Mg storage, and our work also gives new understanding into the Mg storage mechanism in the ED-NVP/C/G structure.
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Materials Today Communications
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2026
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IF 4.9
Haoyu Feng,Yiting He,Zhaoxiang Ma,Weiyi Wu,Wenjuan Zhou
Zn–Mg–Cu TPMS gradient scaffolds were fabricated by selective laser melting. • Mg 2 Zn 11 and Cu 5 Zn 8 phases contributed to enhanced mechanical properties. • Gradient architecture and PDA coating regulated degradation behavior. • The integrated design improved surface bioactivity and promoted osteogenic differentiation. Biodegradable Zn-based scaffolds have attracted increasing attention for bone repair owing to their moderate degradation rate and favorable biological properties; however, achieving coordinated regulation of mechanical integrity, degradation behavior, and osteogenic activity remains challenging. Zn–Mg–Cu triply periodic minimal surface (TPMS) gyroid scaffolds with a radial pore-size gradient were fabricated by selective laser melting (SLM) and subsequently subjected to NaOH alkali-thermal activation and polydopamine (PDA) coating. The incorporation of Mg and Cu significantly enhanced the mechanical properties of the Zn alloy through solid-solution and second-phase strengthening. Meanwhile, the TPMS gradient porous architecture improved stress distribution and provided spatially graded pathways for electrolyte transport, thereby influencing degradation behavior and ion release characteristics. NaOH alkali-thermal treatment markedly improved surface wettability, and the PDA@Zn alloy scaffolds retained a hydrophilic interface; the complete surface treatment mitigated rapid ion release during the early stage of degradation. The scaffolds exhibited favorable compressive strength, controllable degradation behavior, and enhanced cytocompatibility. ICP-MS measurements revealed distinct Zn 2 + , Mg 2+ , and Cu 2+ release profiles, while the in vitro assays demonstrated favorable cell proliferation, osteogenic differentiation, and extracellular matrix mineralization. These biological responses may be associated with the combined effects of the released ions. Overall, the fabricated scaffolds exhibited favorable mechanical properties and controlled degradation behavior, while the complete surface treatment was associated with improved cytocompatibility and osteogenic activity.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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IF 3.1
Shengnan Liu,Tianyu Lan,Liwu Zu,Shaobo Dong,Binghua Hou,Xiaochen Bao,Jifa Liu,Jinying Yan,Ping Zhang,Jiaxing Xie
Polyethylene (PE), a widely used polyolefin material, is limited in high-safety applications due to low flame retardancy and thermal stability. To address this, stearic acid (SA) was used for surface graft modification of magnesium-aluminum layered double hydroxide (LDH), constructing a low-polarity organic functional layer to enhance interface compatibility with PE. SA-LDH/PE flame-retardant reinforced composites were successfully prepared. After modification, LDH hydrophobicity and dispersibility improved significantly, with water contact angle increasing from 11.7° to 146°. Composite surface hydrophobicity was also optimized, contact angle increasing from 67.38° to 78.3°. At a 10 wt% loading, composites show optimal performance: flexural modulus increased by 105% compared to pure PE, tensile properties enhanced, char residue to 5.34%, limiting oxygen index (LOI) rising from 17.4% to 23.5%. SA modification induces hydrophilic-to-hydrophobic transition in LDH, promoting uniform dispersion and efficient interfacial load transfer in PE matrix, facilitating stable char layer formation and improving thermal stability and flame retardancy. This study proposes a green efficient LDH modification strategy, providing an effective pathway for halogen-free flame-retardant polyolefins and theoretical support for high-performance LDH dispersion and synergistic flame-retardant enhancement.
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ACS Applied Nano Materials
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2026
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IF 5.5
Xiaoyang Dong,Jinxing Wang,Jingdong Yang,Wen Zeng,Guangsheng Huang,Jingfeng Wang
Magnesium (Mg)–air batteries are regarded as promising large-scale energy-storage devices because of their high theoretical energy density, low material cost, intrinsic safety, and environmental benignity. Nevertheless, their practical deployment is severely hindered by sluggish oxygen reduction reaction (ORR) kinetics at the cathode. Herein, nanoscale transition-metal–nitrogen-doped carbon (M-N-C, M = Fe, Co, Ni) electrocatalysts─denoted FNC, CNC, and NNC─are prepared by argon-pyrolysis of Prussian blue analogues (PBAs). The cationic and anionic ligands are systematically varied to tailor the crystal phase, pore architecture, and nanoscale M-Nx coordination environment. Comprehensive characterization shows that CNC possesses the highest density of well-dispersed Co-Nx active nanosites embedded in a graphitic matrix. This ensures rapid electron transfer and abundant accessible active centers. Electrochemical tests in alkaline (0.1 M KOH) and neutral (3.5 wt % NaCl) electrolytes demonstrate that CNC delivers the most robust ORR activity and stability (CNC > FNC > NNC) via a near-ideal 4 e pathway. Meanwhile, CNC exhibits better stability than commercial Pt/C in both alkaline and neutral electrolytes. As the cathode nanocatalyst in Mg-air batteries, CNC is found to yield a peak power density of 19.14 mW/cm2─only 0.66 mW/cm2 below that of commercial Pt/C. The decisive role of nanoscale M-Nx coordination environments in boosting ORR kinetics is thus elucidated. This work provides a nanomaterials-driven strategy for developing high-performance, cost-effective electrocatalysts for Mg-air batteries.
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ACS ES&T Engineering
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2026
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IF 6.3
Youyu Li,Min Zou
The low grade, high activity, and high toxicity of chromium in chromium-containing sludge present significant challenges for its immobilization and recycling. To effectively stabilize and recover chromium from chromium-containing sludge, this study presents a novel method referred to as “narrow-particle-size- fraction (Fe, Mg)1–xO solid-solution magnetization”. By prescreening the appropriate particle size fraction of (Fe, Mg)1–xO, this process leverages the thermodynamic and kinetic advantages offered by high temperatures to convert the toxic and highly mobile chromium component into a nontoxic, structurally stable, and strongly magnetic (Fe, Mg)3–xCrxO4 (0 ≤ x ≤ 2) solid-solution during roasting. The (Fe, Mg)3–xCrxO4 phase is then isolated using weak magnetic separation. Taken the chromium-containing sludge with a Cr2O3 content of 5.94 wt % as the raw material, after optimizing the (Fe, Mg)1–xO particle size fraction and roasting conditions, the chromium recovery rate in the magnetic concentrate exceeds 92%, while the grade of Cr2O3 increases to 12.47%. Various analyses confirm that the (Fe, Mg)3–xCrxO4 solid-solution is an effective magnetic carrier for chromium in chromium-containing sludge. This study provides valuable insight for the mineralogical immobilization and resource utilization of chromium-containing solid waste.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Dayan Li,Xiufang Cui,Yuqi Dong,Xin Wen,Haoyu Song,Xinyue Dai,Guo Jin,Wei Zheng,Yuyun Yang
A novel composite coating with sandwich structure was prepared on the anodic oxidation coating (AO coating) of Mg-Li alloy, which was mainly composed of layered double hydroxide (LDH) nanosheets and electroless NiP coating. The microstructure differences between classical MgAl-LDH nanosheets and high entropy MgAlNiCrZn-LDH nanosheets (HE-LDH) and their effects on the corrosion resistance of the coatings were investigated, especially the effects of the two types of LDH nanosheets on the galvanic corrosion between Mg-Li alloy and Ni alloy coatings. The results show that the sandwich composite coating can effectively improve the corrosion resistance of Mg-Li alloy, especially to inhibit galvanic corrosion. The lifting effect of high entropy LDH sandwich composite coating is significantly higher than that of the MgAl-LDH sandwich composite coating. The coupling current density between Mg-Li alloy and Ni coating was reduced by one order of magnitude, and the self-corrosion current density of composite coating was reduced to 3.31×10 -7 A·cm -2 . HE-LDH nanosheets had better corrosion resistance, which may be due to the high charge density and densification of high-entropy LDH, which increased the adsorption and physical barrier to Cl - .
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ADVANCED FUNCTIONAL MATERIALS
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2026
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IF 19.9
Yukun Hu,Shutao Gao,Chuanhui Xun,Hongchuan Wang,Tao Xu,Weidong Liang,Liang Ma,Weibin Sheng
Spinal cord injury (SCI) involves oxidative stress, inflammation, and mitochondrial dysfunction that impair neural cell survival, while conventional therapies fail to sustainably improve the lesion microenvironment. Here, we developed a composite hydrogel patch (Mg-CDs/Exo@EW) by leveraging the enzyme-mimicking activity and coordination crosslinking ability of magnesium-doped carbon dots (Mg-CDs) to induce egg white gelation, with uniform incorporation of orange juice–derived exosomes (Exo). Orange peel-derived CDs displayed strong antioxidative nanozyme activity, which was further enhanced by magnesium ion doping to promote M2 macrophage polarization, axonal regeneration, and neural repair. Transcriptomic and Western blot analyses revealed that Mg-CDs activate the GPX4/ACSL4 pathway to suppress neuronal ferroptosis. Untargeted metabolomics showed that Exo are enriched in flavonoids and vitamin C with potent antioxidative and anti-inflammatory effects, while their negatively charged surface and adhesion molecules provide targeted delivery and enhanced repair efficacy. In vivo, Mg-CDs/Exo@EW effectively alleviated oxidative stress, regulated inflammation, reduced glial scar formation, and supported axonal regeneration, ultimately improving motor functional recovery. This multifunctional platform offers a promising therapeutic strategy for SCI.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2026
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IF 6.3
Xiaohui Ma,Anran Guo,Liwen Yan,Lingyi Meng,Heng Chen,Xiaoxia Hu,Jinyu Wu,Jiachen Liu
As high emissivity emitters, traditional pseudobrookite ceramics are limited in thermal protection applications due to their structure degradation at high temperatures. In this work, a high-entropy pseudobrookite, (Mg,Co,Ni,Zn)Ti 2 O 5 , was designed, and CoTi 2 O 5 was selected as a single-component counterpart to evaluate the high-entropy effect on phase stability and emissivity. After heating at 1400 °C for 15 h, (Mg,Co,Ni,Zn)Ti 2 O 5 retained a single pseudobrookite phase with nearly unchanged emissivity, whereas CoTi 2 O 5 exhibited obvious phase degradation and emissivity deterioration. The higher 2.5–7 μm emissivity of (Mg,Co,Ni,Zn)Ti 2 O 5 was attributed to its narrower band gap (2.66 eV) and a higher oxygen vacancy fraction (56.87%). When coated on alumina-silica fiber fabric, the (Mg,Co,Ni,Zn)Ti 2 O 5 coating exhibited improved thermal-protection performance owing to its high infrared emissivity and reduced heat conduction, while maintaining good mechanical properties after heat treatment. These results demonstrate that (Mg,Co,Ni,Zn)Ti 2 O 5 is a promising high-emissivity ceramic for extreme thermal environments.
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CERAMICS INTERNATIONAL
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2026
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IF 6
Mengting Li,Yixin Luo,Xing Wang,Jun Ding,Chao Yu,Zhenglong Liu,Chengji Deng
To address the diminished corrosion resistance of low carbon Al 2 O 3 –C refractories resulting from reduced carbon content, this study incorporated MgSiN 2 prepared by reconstructing high-silicon magnesite mineral phases into Al 2 O 3 –C refractories, and prepared samples at 1450 °C in an N 2 atmosphere. The influence of MgSiN 2 addition level on the phase composition, microstructure, mechanical properties, and corrosion resistance of the material was comprehensively explored. The findings demonstrated that MgSiN 2 in-situ generated flake Mg-Sialon and granular MgAl 2 O 4 ceramic phases, forming a three-dimensional interwoven folded network structure within the matrix, significantly boosting the aggregate-matrix interfacial bonding. When the content of MgSiN 2 was 3 wt%, the porosity of the material was the lowest, and the cold modulus of rupture and cold crushing strength were the best due to the synergistic effect of the generated ceramic phases. With the increase of MgSiN 2 content, the corrosion index decreased from 79.4% to 59.1%, and the corrosion resistance of the material gradually improved.
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